Super Soundproofing Community Forum

Soundproofing Forum Topics => Acoustical Questions? Ask here about Sound absorbsion, Reflection, ETC => Topic started by: godfather on June 16, 2009, 02:03:19 AM

Title: Vehicle acoustics
Post by: godfather on June 16, 2009, 02:03:19 AM
Hello,
I am currently building a sound quality competition vehicle and have some specific concerns you might be able to help me with.
1. I would like to know what specific material would be best to use for sound absorbtion around the speaker locations to minimize reflection. We are completely rebuilding the dash and there will be a area around 1 ft x 5 ft directly in front of the drivers that I want to treat.
2. The A pillars are the pillars that are on each side of the windshield and they are currently a hard plastic and I want to cover them in an acoustical treatment of some sort but I am not sure what the best material would be.
3. The rear window and surrounding panels I would like to treat as well and again I am looking for an expert opinion on what would be the best material.
Thanks for your time and I look forward to reading your input.

GF
Title: Re: Vehicle acoustics
Post by: godfather on June 18, 2009, 01:55:03 PM
Anyone out there with an opinion?
GF
Title: Re: Vehicle acoustics
Post by: Randy S on June 22, 2009, 07:56:57 PM
Any material (open cell) with high NRC ratings is what you want for absorption....like pyramids or you could use fabric covered fiberglass panels.
Title: Re: Vehicle acoustics
Post by: godfather on June 24, 2009, 02:51:53 PM
Do different materials absorb certain frequencies?
Can you recommend a material and a source to purchase from?
Title: Re: Vehicle acoustics
Post by: mike sorensen on March 05, 2012, 01:58:19 AM
Don't forget about closed cell foams. They provide high NRC ratings are are smoother in performance than most closed cell foams. Any foam is always welcome in the "glass room" scenario. Make sure to place foam of any type on the dash surface and the ceiling. 

Mike